Brake mechanism for talking-machines.



J. W. HUGHES.

BRAKE MECHANISM FOR TALKING MACHINES.

APPLICATION FILED JULY 17,1914.

Patented Mar. 14, 1916.

2 SHEETSQSHEET I.

J. W. HUGHES. BRAKE MECHANISM FOR TALKING MACHINES.

APPLICATION FILED ]ULV17,1914.

Patented Mar. 14, 1916.

2 SHEETS-SHEET 2.

W 23%;;is:

UNITE STAT JAMES W. HUGHES, OF NAR-BERTH, PENNSYLVANIA, ASSIGNOR T0 HUGHES- LIPPINCOTT COMPANY, OF CAMDEN, NEW JERSEY, A CORPORATION OF NEW JERSEY.

BRAKE MECHANISM FOR TALKING-MACHINES.

Specification of Letters Patent.

Patented Mar. 14, 1916.

Application filed July 17, 1914. Serial No. 851,525.

ing-Machlnes, of which the following is. a

. specification.

One object of my invention is to provide a brake which will stop the rotation of the record carrier of a talkingmachine immediately after the record has been completed, irrespective of the length of the record.

A further object of the invention is to construct the mechanism so that the brake will be held clear of the carrier while the arm carrying the needle travels toward the center of the record,but as soon as the record is completed and the lateral movement of the arm is stopped then the brake will be applied, due to the continued movement of a part of the mechanism which causes the brake to be released.

In the accompanying drawings :-Figure 1, is a plan view illustrating my brake mechanism with the cap plates removed and sufficient of a talking machine disk carrier and arm shown by dotted lines;

. Fig. 2, is a longitudinal sectional view on the line a-a, Fig. 1; Fig. 3, is an enlarged transverse sectional view on the line b-b,

Fig; 1; Fig. 4, is a'sectional view on the line 00, Fig. 3, with the clutch in engagement with the screw; Fig. 5, is a similar view, showin the clutch out of engagement; Fig. 6, 1s a detached perspective view of the brake rod; Fig. 7, is a detached per spective view of the pawl which engages the brake rod; Fig. 8, is a sectional per spective View of one of the right angle gears; Fig. 9, is a detached perspective view of the clutch; and Fig. 10, is a view illustrating 1 means for actuating'the mechanism from table the periphery ofthe disk carrier.

Inthe accompanying drawings, 1 is the records.

2 is the rotating disk carrier having a Cal f v wheel 13, and this shaft is flexibly connect- '.'ed to .ashaft 26 by a coiled spring 21. The -sh'att 2oihas its hearings in the casing 9f downwardly extending flange 3.

rier is mounted on the upper end of I'O-[H shaft 4 Wl1l0li f-9Xt6l1(l$ throughthe tating Brake Mechanism for Talk-- improved is engaged by -t wo thin plates and securing them to 5 is the tapered tone arm carrying at groove, so that, immediately a ter the termination of the record piece, the needle is shifted into this concentric groove and the tone arm ceases to travel toward the center of rotation of the disk record. The'usual practice is to manually stop the rotation of the mechanism, or to provide a brake which is actuated by the tone arm coming in contact with the tripping mechanism, but as the records are of different lengths the brakes heretofore employed had tobe set after each record used, as the records all terminate at different points and the position of the concentric groove varies with each record.

By my invention I utilize the automatic stopping movement of the tone arm to release the brake mechanism, so that this mechanism will be applied irrespective of the position of the tone arm, providing the needle is located in the concentric groove.

9 is a casin inclosing the improved brake mechanism. his casing can be secured to the base 1 by one or more screws 10, as desired, and projecting from this casing is an arm 11, whichcarries. a bearing through which extends the shaft 4 on which the record carrier'is mounted. Located within the bearing 12 is a'spiral gear wheel 13, which The gear has sockets 16 formed by bending Wheel so, that the-sockets will enter the notchesin the hub 17' of the record carrier "2 without the necessity of altering any of the parts, as the pin 14:, in standard machines, directly engages the hub 17. In

the be ring '12 is a short shaft 18 which has a 'gear wheel 19 thereon meshing with the the pins 14 on the shaft 4.

the

and has abeveled gear. wheel 22 thereon which meshes with a bevel gear wheel '23 on a screw shaft 24. This screw shaft has a thread thereon in the form of a ratchet 'and is straight at the front and beveled at in two sections-29 and 30, as illustrated in Fig. 9. The section-29 has teeth on its upper side which engage the screw 24, and the other section 30 has teeth on the lower side which alsoengage the screw 24. Each section has 'a projection 31.

On the. brake .rod 25 beveled at the edge, as indicated in Fig. 4, so that when the brake rod is moved toward the screw 24 it forces the sections 29 and 30 out of engagement with the threads of the screw 24. On the -rod.27 is acollar'33 and between this collar and the clutch is a coiled spring 34. The spring is fastened 'to the collar at one end and to the section 30 of,

the clutch at the opposite end and, as the collar is secured to the rod 27 by a set screw.

and: the section 29 is also secured to the shaft by a set screw, theftendency of the spring is to cause the two sections to engage the screw, but the spring will yield when the sections are forced from the screw.

' through a slot in the lever 41 mounted on a pivot pin 42 on the section 29 of the clutch and connected at 43 to a rod 44 which is attached to an arm 45 secured to the tone arm 5, in the present instance by means of a strap 46 held firmly to the tone arm=by a clamp screw 47. A spring 48 bears upon the pawl 36 and the pressure can be regulated by a 'set screw 49, Fig. 1.' A coiled spring 50 is attached at the rear end to the casing and at the forward end to a pin 51 on the brake rod, and this spring tends to force the brake rod against the flange 3 of the carrier 2 and the pressure of this s ring is suilicient to prevent the mechanism rom turning the carrier when the brake is applied.

The pitch of the screw 24 is less than the lowest speed of travel of the tone arm toward the center of rotation of thedisk and,

consequently, the pivotal connection 43 will is a bar 32, slightly instrument, as it travel at the same speed and, in someinstances, faster than the pivot 42, of the lever 41 and the section 29of; the clutch, so that the pawl .36 will remain in engagement with the brake rod 25, retaining the brake clear of the fiange'3 of the carrier 2. When, however, the needle has reached the end of'the record and is in the concentric groove a:

thereof shown by dotted lines in Fig. 1, the

forward movement. of the pivot connection 42 is stopped, but as the screw 24 continues to rotate due to the rotation of the parts connected with it, it willforce the clutch forward and the lever'41 will turn on the pivot 43 and will force the pawl 36 outof engagement with the notch 38 of the brake rod against the pressure of the s ring 48, and

the spring 50 will immediate y retract the brake rod, causing thebrakeband 26 to engage the flange 3 and at the same time the bar 32 will enter the space between the pro jections 31 on the sections of the clutch and will force them out of engagement with the screw. Thus the screw will turn and the rotation of the carrier 2 will be stopped.

- By making the-teeth of the screw 24 in the form of ratchet teeth, the clutch can be moved forward by the action of the tone arm at a greater s'peedthan the travel of the screw, so that the device will accommodate itself to any scroll cut in the disk. As hereinbefore remarked, he pitch of the screw is less than the finest scroll now produced. i

In Fig. 10, I have illustrated means for" actuating the screw from the periphery of the disk carrier. On .the disk carrier-is a band orflange 52 having a projection 53 which contacts with an arm 54loose on -the screw 24. On the hub of the arm are ratchet teeth engaging teeth on a collar of the screw and a spring 54 is attached to the arm. At each revolution of the disk the screw is turned. The other mechanism is similar to i that previously described. Thus it will be seen that I am enabled to attach my improved mechanism to any talkcommodate each record as itis applied to the is automatic in its action. I- claim 1. The combination in a talking machine, of a. turn table;a pivoted element; a

casing; a brake arranged to prevent the rotation of the turn table; means for holding the brake out of ECtlOIliB/fSClBW; means for driving the screw from the driving mechanism of the turn. table; a clutch engaging the screw; and means connected to the clutch and to the pivoted element for actuating the means for holding the brake out of action, the parts being so arranged that when the movement of the pivoted element is discontinued the movement of the screw will cause the means to release the brake, allowing it to be applied to stop the rotation of the turn table.

'2. The combination in a talking machine, of a turn table; a pivoted element; a casing; a screw mounted in the casing; means for turning the screw from the driving vmechanism of the turn table; a brake rod arranged to engage the turn table to prevent it from rotating; a pawl engaging the brake'rod and holding it out of action; a clutch arranged to be traversed by the screw; and a lever pivoted to the clutch and connected to the pivoted'element and engaging the pawl so that when the pivoted element is traveling over the turn table the brake will remainout of engagement with the turn table but as soon as the movement of the pivoted element is discontinued the brake will be released and applied.

3. The combinationin a talking machine,

1 of a turn table; a pivoted element; a brake arranged to be applied to the turn table to stop its rotation; a screw; means for driving the screw from the rotating mechanism of the turn table; a pawl engaging the brake and tending to hold it out of engagement with the carrier; a clutch engaging the screw and arranged to travel thereon and having a pivot; a lever mounted on the pivot; and a rod connected to one arm of the lever and to the pivoted element, the other arm .of the lever engaging the pawl so that when the pivoted element is traveling over the turn table the pawl will remain in engagement with the brake rod, keeping it out of engagement with the turn table, but when the travel is stopped the pawl will be forced out of engagementwith the brake rod and will be released and will clamp the turn table, preventing further rotation thereof.

4. The combination in a talking machine, of a turn table; a pivoted element; a casing; a screw mounted in the casing, the threads of the screw being straight at the front and beveled at the rear; means for drivingthe screw from the rotating mechanism of the machine; a nut arranged to slide parallel with the screw and to'engage the said screw; a brake rod; a pawl engaging the said rod; a lever pivoted to the nut and connected to the pawl; and means for connecting said lever with the pivoted element, the nut yieldingly engaging the screw so that when the nut travels faster than the screw it will slip over the screw.

5. The combination in atalking machine,

of a turn table; a pivotedelement; a screw;

means for driving the screw from the turn table; a rod arranged parallel with the screw; a two-part clutch in the form of a nut engaging the screw, one of said partspawl and the other arm engaging the piv-- oted element.

6. The combination in a'talking machine,

' of a turntable; a pivoted element; a casing;

a screw shaft mounted therein; means for driving the shaft from the turn table; a rod extending parallel with the screw; a twopart clutch mounted thereon and engaging the screw, each part of the clutch having an extension; a brake rod arranged to engage the turn table and having a bar arranged to enter the space between the two projections of the clutch and holding the clutch out a pawl engaging the brake rod; a lever pivoted to the clutch and engaging the pawl;

and an arm connecting the lever with the pivoted element.

'7. The combination in a talking machine, of a turn table; a pivoted element; a shaft projecting through the base of the machine and u on which the turn table is mounted; a bea'rlngthrough which the shaft extends; a gear wheel mounted in the bearing; a transverse pin' on, the shaft engaging the gear wheel so that it will turn with the shaft; a casing secured to the base; an arm connecting the casing with the bearing; a shaft having a gear wheel thereon meshing with the first mentioned gear wheel; a second shaft coupled to the last mentioned shaft and having a beveled gear wheel at one end; a screw mounted in the casing also having a beveled gear gaging the screw; a brake rod; a pawl retaining the carrier; a lever pivoted to the clutch and engaging the pawl; and an arm connected to the lever and to the pivoted element. 8. The combination in a talkingfmachine, of a turn table having a head; a pivoted element; a driven shaft projecting thi ough the base and on which the turn table is mounted; a casing secured to the base; an arm projecting from the casing; a bearing on the end of the arm 'through'which the driven shaft extends; a gear wheel mounted in thebearing and arranged to receive the hub of the turn table; a screw shaft in the casing; gearing between the screw shaft and the driven gear wheel; a brake rod; a

of engagement with the screw;

wheel; a clutch en-v spring tending to 'form the brake rod.

against'the turn table; a pawl for retaining thebrake rod clear of the turn table; a clutch engaging the thread of the screw;and

- a lever pivoted to the clutch and'connected to the pawl and also connected to the pivoted element of the machine.

WM. E. SHUPE, WM. A. BARR. 

